Assets Held for Sale - Additional Information (Detail)	3 Months Ended			12 Months Ended
	Dec. 31, 2016 USD ($) Facility	Jan. 03, 2015 USD ($)	Jul. 12, 2014 USD ($)	Dec. 31, 2016 USD ($) Facility	Jan. 02, 2016 USD ($)	Jan. 03, 2015 USD ($)	Aug. 13, 2014 USD ($)
Long Lived Assets Held For Sale [Line Items]
Impairment of Long-Lived Assets Held-for-Sale	$ 5,300,000		$ 1,900,000		$ 2,300,000	$ 5,800,000
Cash consideration of discontinued operation							$ 8,400,000
Assets Held for Sale	36,976,000			$ 36,976,000	36,191,000		$ 7,600,000
Goodwill impairment loss			2,600,000	0	0
Gain on divestiture of discontinued operation			1,800,000
Ft. Worth, Texas, tortilla facility | Property, Plant and Equipment
Long Lived Assets Held For Sale [Line Items]
Impairment of Long-Lived Assets Held-for-Sale						$ 3,500,000
Gain on property plan and equipment			800,000
Cost incurred in severance and inventory			$ 800,000
Acquired Hostess Bread Assets Classified as Held for Sale
Long Lived Assets Held For Sale [Line Items]
Impairment of Long-Lived Assets Held-for-Sale	4,600,000	$ 5,800,000
Acquired Hostess Bread Assets Plants and Depots
Long Lived Assets Held For Sale [Line Items]
Assets Held for Sale	$ 479,000			$ 479,000	$ 3,082,000
Acquired Hostess Bread Assets Plants and Depots | Plants
Long Lived Assets Held For Sale [Line Items]
Number of Acquired Hostess Bread Assets to be sold | Facility	20			20
Acquired Hostess Bread Assets Plants and Depots | Depots
Long Lived Assets Held For Sale [Line Items]
Number of Acquired Hostess Bread Assets to be sold | Facility	36			36